# United States tariff line 9606.21.20.00: Of casein

> In the United States tariff, line 9606.21.20.00 covers buttons, of plastics, not covered with textile material, of casein. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 9606.21 in heading 96.06 (chapter 96).

Source: https://border.bot/countries/united-states/hs-codes/9606212000
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 96](https://border.bot/countries/united-states/hs-codes/96) / [9606.21](https://border.bot/countries/united-states/hs-codes/960621) / [9606.21.20.00](https://border.bot/countries/united-states/hs-codes/9606212000)

## Key facts

- Tariff line: 9606.21.20.00
- Covers: Buttons, of plastics, not covered with textile material, of casein
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [9606.21](https://border.bot/hs-codes/960621)

## What this line covers

In the United States tariff, line 9606.21.20.00 covers buttons, of plastics, not covered with textile material, of casein.

Its legal text is “Of casein”, read under “Buttons” and “Of plastics, not covered with textile material”.

## How it is structured

It falls under HS subheading 9606.21 in heading 96.06 (chapter 96). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 96: Miscellaneous manufactured articles
- Heading 96.06: Buttons, press-fasteners, snap-fasteners and press-studs, button molds and other parts of these articles; button blanks
- Subheading 9606.21: Buttons
- Within the subheading: Of plastics, not covered with textile material
- Line 9606.21.20.00: Of casein

## Duty

Goods under this line enter free of general (MFN) duty.

## In other countries

No other national tariff on border.bot has live lines under 9606.21 yet.

- [The Harmonized System text for 9606.21](https://border.bot/hs-codes/960621)

## Other lines under 9606.21

- [9606.21.40.00](https://border.bot/countries/united-states/hs-codes/9606214000) Of acrylic resin, of polyester resin or of both such resins
- [9606.21.60.00](https://border.bot/countries/united-states/hs-codes/9606216000) Other

- Previous line: [9606.10.80.00](https://border.bot/countries/united-states/hs-codes/9606108000) Valued over 20¢ per dozen pieces or parts
- Next line: [9606.21.40.00](https://border.bot/countries/united-states/hs-codes/9606214000) Of acrylic resin, of polyester resin or of both such resins

## Frequently asked questions

### What does tariff line 9606.21.20.00 cover in the United States tariff?

In the United States tariff, line 9606.21.20.00 covers buttons, of plastics, not covered with textile material, of casein.

### What is the general (MFN) duty on 9606.21.20.00 in the United States?

Goods under this line enter free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/9606212000.json